<!DOCTYPE html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
  <title>
    CSS Reference
  </title>
  <style>
    .box {
      display: flex;
      border: 1px solid black;
      margin: 5px 20px;
      width: 100px;
      float: left; /* For testing in "rows" */
      font: 10px serif;
    }
    .box > * {
      /* Modern flexbox (used in this reference case) allows everything to
         shrink by default, but -webkit-box does not, so we have to turn that
         feature off to make an accurate reference case. */
      flex-shrink: 0;
    }

    .box > *:nth-child(1) { background: turquoise; }
    .box > *:nth-child(2) { background: salmon;    }
    .box > *:nth-child(3) { background: yellow;    }

    .huge { width: 120px }
    .bf1 { flex: 1 1 auto }
    .bf3 { flex: 3 3 auto }

    br { clear: both; }
  </style>
</head>
<body>
  <!-- FIRST ROW: Default -webkit-box-flex -->
  <div class="box">
    <div>a</div>
  </div>

  <div class="box">
    <div>a</div><div>b</div>
  </div>

  <div class="box">
    <div class="huge">a</div>
  </div>

  <br>

  <!-- SECOND ROW: One item has nonzero -webkit-box-flex -->
  <div class="box">
    <div class="bf1">a</div>
  </div>

  <div class="box">
    <div>a</div><div class="bf1">b</div>
  </div>

  <div class="box">
    <div class="huge bf1">a</div>
  </div>

  <br>

  <!-- THIRD ROW: Two items have nonzero (equal) -webkit-box-flex -->
  <div class="box">
    <div class="bf1">a</div><div class="bf1">b</div>
  </div>

  <div class="box">
    <div class="bf1">a</div><div>b</div><div class="bf1">c</div>
  </div>

  <div class="box">
    <div class="huge bf1">a</div>
    <div>b</div>
    <div class="huge bf1">c</div>
  </div>

  <br>

  <!-- FOURTH ROW: Non-equal nonzero -webkit-box-flex values -->
  <div class="box">
    <div class="bf1">a</div><div class="bf3">b</div>
  </div>

  <div class="box">
    <div class="bf3">a</div><div class="bf1">b</div>
  </div>

  <div class="box">
    <div class="huge bf1">a</div>
    <div class="huge bf3">b</div>
  </div>

</body>
</html>
